Deductions & credits

It does not seem to have "flowed" to my IA return at all, though it may have, the state returns don't seem to have a summary like Federal that explains calculations.

 

If I can convince my employer to amend my W2 and list this reimbursement as box 12 Code L, shouldn't that be tax free? I just went back to my W2 and tried this to see if it would work and for some reason TurboTax didn't change anything after I had added a code L $9000 entry in box 12 of this W2